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Everything Dirt Bike
Make / Model Specific
Kawasaki
Jetting Question
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<blockquote data-quote="Mihylo33" data-source="post: 208520" data-attributes="member: 408"><p>[USER=425]@SRAD97750[/USER] is right on all accounts. I'm a wiseco fan but have never heard of an actual namura piston failure by design. Jetting is a constant. I would often tune my jets through out the day depending on temps, humidity and elevation, but that's mx racing. </p><p>Why are you boring the bike out?</p><p>Is it steel sleeved? With the boring and aftermarket pipe you will probably have to re-jet the carb and it's not a guessing game. </p><p>I had a 99 kx250 and it was the fastest most durable bike I ever owned. I installed the hotrod crank and moto-Tassarini vforce reeds and had to rejet. Also remember this bike is designed and built for racing from corner to corner not wide open lake beds. If that's what you like to do then I do suggest going slightly fatter on top (after you get your perfect jetting results) and going to higher gearing. Keep in mind that your throttle response will change and so will the lower end grunt.</p></blockquote><p></p>
[QUOTE="Mihylo33, post: 208520, member: 408"] [USER=425]@SRAD97750[/USER] is right on all accounts. I'm a wiseco fan but have never heard of an actual namura piston failure by design. Jetting is a constant. I would often tune my jets through out the day depending on temps, humidity and elevation, but that's mx racing. Why are you boring the bike out? Is it steel sleeved? With the boring and aftermarket pipe you will probably have to re-jet the carb and it's not a guessing game. I had a 99 kx250 and it was the fastest most durable bike I ever owned. I installed the hotrod crank and moto-Tassarini vforce reeds and had to rejet. Also remember this bike is designed and built for racing from corner to corner not wide open lake beds. If that's what you like to do then I do suggest going slightly fatter on top (after you get your perfect jetting results) and going to higher gearing. Keep in mind that your throttle response will change and so will the lower end grunt. [/QUOTE]
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Everything Dirt Bike
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Jetting Question
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